| 摘要 |
PURPOSE: To prevent thermal deterioration by thermally insulating a voltage dependent metal oxide resistor from the conductor of coil. CONSTITUTION: A thermal insulator 9 of hard plastic embedded in a main insulator 5 surrounds a part 13 of the tubular surface of a metal oxide resistor 10 along a coil 1. On the contrary, the end face 11 of the metal oxide resistor 10 provided with a connecting piece 12 and the part 14 of the tubular surface placed in the cooling air flow without being covered on the side opposite to the high temperature coil 1 are exposed. Consequently, these parts are placed, without being covered, in the cooling air flow being guided on the coil end 15 of an electric rotating machine and the loss heat of the metal oxide resistor 10 itself is dissipated simultaneously. |
